Simultaneous Nadir Overpasses (SNOs) between AURA and NPP
TLE Epoch: 2017 4 7.  Predictions up to the next  14.0 days:

     Date     Time(AURA) AURA Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/09/2017   11:25:18   ( -79.31,  84.16) 04/09/2017   11:24:25  ( -79.31,  84.13)    0.74                53
 04/09/2017   12:14:37   (  79.57,-106.43) 04/09/2017   12:15:01  (  79.58,-106.36)    1.70                24
 04/12/2017   03:41:43   ( -79.43,-159.15) 04/12/2017   03:41:17  ( -79.44,-159.03)    2.57                26
 04/12/2017   04:31:04   (  79.62,   9.76) 04/12/2017   04:31:56  (  79.61,   9.69)    1.40                52
 04/14/2017   19:10:02   (  75.96, 133.53) 04/14/2017   19:08:49  (  76.14, 132.29)   39.00                73
 04/14/2017   19:58:10   ( -79.47, -42.99) 04/14/2017   19:58:12  ( -79.48, -42.99)    0.29                 2
 04/17/2017   11:25:13   (  79.34, -95.63) 04/17/2017   11:24:25  (  79.35, -95.57)    1.47                48
 04/17/2017   12:14:35   ( -79.55,  73.38) 04/17/2017   12:15:05  ( -79.54,  73.31)    1.52                30
 04/20/2017   03:41:39   (  79.41,  20.68) 04/20/2017   03:41:19  (  79.41,  20.70)    0.49                20